Keyboard Month: Expert Picks & Hot Deals

Noise Engineering Roucha Legio State-variable Multimode Filter Eurorack Module

6HP Eurorack Multimode 12db/Octave Filter Module with Lowpass, Bandpass, and Highpass Modes, Wavefolding, Bypass, 4 x CV In, and Stereo I/O
Share
Item ID: RouchaLegio
Noise Engineering Roucha Legio State-variable Multimode Filter Eurorack Module
Price:$310 and 00 cents
$52.00 suggested monthly payments with 6 month financing‡

We Can Get It!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Noise Engineering. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated May 2026.

Add to Cart
Sales engineer photo
Ask An Expert

Our expertly trained Sales Engineers are ready to help!

What is a Sales Engineer?
Sweetwater Gear Exchange

Have one to sell?
Check out Sweetwater's Gear Exchange!
Learn More

Noise Engineering Roucha Legio State-variable Multimode Filter Eurorack Module
We Can Get It!
Price:$310 and 00 cents
Add to Cart
Add to list
Skip to Description
Most Popular Accessories & Related Items
Back to navigation

This article was Written By

Our Product Research Team

Get to know them!

Flexible, Ferocious, and Emphatic Filtering

As it pertains to synth sounds, Noise Engineering has demonstrated with their Legio world of modules that the physical limitations of size and interface arrangement are a boon to creativity in the right hands. According to Sweetwater’s synthesists, Rouch Legio has more than benefited from this approach to design. Despite its 6HP profile, this 12dB/octave state-variable multimode filter packs a punch worth at least three modules of its size. Resonance and frequency values are easily dialed in by their respective encoders, but they can also be attenuated via CV, which is perfect for expressive control and live performance. In fact, the frequency encoder hosts its own fun secret: the faster you spin it, the more the rate of frequency change increases. What happens if you click it? You can immediately bypass the entire module — another must-have tool for performance purposes and capable of being activated by a gate signal to the Bypass CV input for added flexibility. Highpass, bandpass, and lowpass filter modes are toggled via a 3-way selector and the opposing tripartite switch handles — of all things — a wavefolder. That’s right, and you can choose to include it before or after the signal chain, or at both ends. The choice is yours!

World of Legio: the 6HP transformable powerhouse

Noise Engineering’s unwavering commitment to owning and personalizing your experience doesn’t stop with the versatility and scope of its modules. Those endowed with the Legio title can quickly and wholly reimagine their inspiration via the powerful onboard stereo oscillator and effects platform. All you need is an Internet connection and a USB cable! Alternate firmware and open-source DIY resources are freely available from Noise Engineering to Legio module owners, supplementing your sound with a world of customizable possibilities.

Noise Engineering: unbridled passion for modulation magic

From the beginnings of humble happenstance to transcending the physical-digital divide to produce compelling, innovative hardware and software instruments, one crucial element has consistently remained as Noise Engineering’s cornerstone: integrity. The company wholeheartedly understands how infinitely personal your relationship to sound can be, so each instrument — physical or virtual — brims with a distinctive character. Additionally, every module provides maximum room for personalized control while retaining its defining attributes that give Noise Engineering’s designs their unmistakable sonic identity. Whether you’re new to Eurorack or a dyed-in-the-wool synthesist, you can rest assured knowing that the creative team at Noise Engineering crafts each aural opportunity with care, one waveform at a time.

Noise Engineering Roucha Legio Features:

  • 6HP module provides powerful, flexible filtering without compromising rackspace
  • 12dB/octave state-variable, multimode filter includes highpass, bandpass, and lowpass options for versatile sound shaping
  • Resonance and Frequency values can be controlled manually or via CV to fit your studio or performance needs
  • Wavefolding is available via 3-way switch, with options for pre- or post-signal chain implementation, or both
  • CV inputs can attenuate wavefolding amount, while a gate input can bypass the module entirely for live buildups and dramatic expression
  • Frequency encoder can be clicked for bypass as well, ensuring you’re never missing out on the module’s suite of features

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage
Back to navigation

Tech Specs

  • Type: Wavefolder/Stereo Filter, Black
  • Analog/Digital: Digital
  • Frequency Controls: Bypass and Resonance Knobs
  • Controls: Fold Knob, All/Post/Pre Switch, HP/BP/LP Switch
  • Analog Inputs: 2 x 1/8" (L, R)
  • Analog Outputs: 2 x 1/8" (L, R)
  • Other I/O: Bypass, Freq, Fold, Res
  • Depth: 1.5" (38.1mm)
  • HP Size: 6HP
  • Power Usage: +12V/140mA, -12V/22mA
  • Power Supply: Requires Eurorack Case and Power Supply
  • Manufacturer Part Number: NE_RL_Black

What Makes Our Sales Engineers Great?

Sweetwater Sales Engineers are a world-class team of experts dedicated to you. Hand selected from across the globe, each brings a wealth of experience and expertise in the world of music gear to provide you with unparalleled service completely free of charge. Friendly relationships, real trust, and the right gear are only a call or a click away!

Back to navigation

Customer Reviews

Be the first to review this product.
Write your review